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SKU: 750204 | UPC: 842422179489
Kooks 11mm High-Performance Spark Plug Wires Grey w/ Black Boots for GM LSX Truck Engines
The Kooks 750204 11mm spark plug wires deliver maximum spark energy and RFI/EMI suppression for all GM LSX truck engines (LS1, LS2, LS3, LS6, LS7, L99, L76, L92, L94, L86, L87, etc.) in Silverado, Sierra, Escalade, and SUV applications. Featuring ultra-low 40 ohm/ft spiral-wound Kevlar core with 11mm silicone jacket and heat-resistant black ceramic boots rated to 600°F, these wires eliminate misfires and voltage loss even under extreme boost or nitrous conditions up to 1,500+ HP.
Custom-cut to exact OEM lengths with pre-installed 90° coil boots and 45° plug boots, the stealth grey jacket adds a clean, factory-look appearance while the double-layer silicone construction resists heat, oil, and abrasion. Direct bolt-on replacement for factory wires with perfect fitment on truck-style coil packs and cathedral/rectangular port heads.
For LS truck owners demanding reliable ignition performance with race-level durability and understated style, the Kooks 750204 wires are the complete high-voltage solution trusted on 1,000+ HP builds worldwide.
Key Features
- 11mm silicone jacket with 40 ohm/ft Kevlar spiral core
- 600°F-rated black ceramic boots
- Pre-installed 90° coil & 45° plug boots
- Custom lengths for LSX truck coil packs
- Maximum voltage delivery – supports 1,500+ HP
- Grey jacket with black boots for stealth appearance
Product Notes
- Fits all GM LS-series truck engines (4.8L–6.2L)
- Direct replacement – no modifications
- Includes 8 wires for V8
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime against manufacturing defects to original purchaser.
Installation Notes
- Professional installation recommended
- Remove one factory wire at a time
- Route new wire following factory path
- Ensure boots fully seat on coil and plug
This Part Fits
| Engine | Application |
|---|---|
| LS1 / LS2 / LS3 / LS6 / LS7 | Silverado, Sierra, Escalade, Tahoe, Suburban |
| L99 / L76 / L92 / L94 / L86 / L87 | 1999–2025 GM Truck & SUV |
Note: Fits all LS-series truck/SUV applications with factory coil packs.
What's Included in the Purchase
- (8) 11mm Grey Spark Plug Wires w/ Black Ceramic Boots
- Part Number: Kooks 750204
Why Choose Kooks?
- Over 60 years of championship-winning ignition & exhaust engineering
- Designed specifically for high-horsepower LS builds
- Limited lifetime warranty on all components
Frequently Asked Questions
-
Q: Fits cathedral and rectangular port?
A: Yes, custom lengths for both head styles -
Q: Heat resistance?
A: Boots rated to 600°F, jacket to 550°F continuous -
Q: Coil-on-plug compatible?
A: Yes, perfect for truck-style coil packs
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Protective retail box.
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